PDF Download


Canonical URL: ; File formats: Plain Text PDF Discuss this RFC: Send questions or comments to [email protected] The Session Description Protocol (SDP) is a format for describing streaming media communications parameters. The IETF published the original specification as an IETF Proposed Standard in April , and subsequently published a revised specification as an IETF Proposed Standard as RFC in July . “An Offer/Answer Model with the Session Description Protocol(RFC ). SIP Configuration Guide, Cisco IOS Release 15M&T-Achieving SIP RFC Compliance. (SDP), as defined in the IETF specification, RFC , An Offer/ Answer.

Author: Voran Jurn
Country: Luxembourg
Language: English (Spanish)
Genre: Spiritual
Published (Last): 5 March 2013
Pages: 207
PDF File Size: 6.25 Mb
ePub File Size: 1.45 Mb
ISBN: 286-5-62230-305-9
Downloads: 94409
Price: Free* [*Free Regsitration Required]
Uploader: Tarn

Webarchive template wayback links Articles with short description All articles with unsourced statements Articles with unsourced statements from August Pages using RFC magic links.

Names are only unique within the associated syntactic construct, i. When repeat times are specified, the start time of each repetition may need to be adjusted so that it will occur at the same local time in a specific timezone throughout the period between the start time and the stop time which are still specified in NTP format in an absolute UTC timezone. Reliability of provisional responses in SIP. This session is specified to last for two hours using NTP timestamps, with a connection address which indicates the address clients must connect to or — when a multicast address is provided, as it is here — subscribe to specified as IPv4 Transcoding services invocation in the SIP using third-party call control 3pcc.

Browse all SIP topics.

Session Initiation Protocol (SIP) industry standards compliance

The SDP specification does not incorporate any transport protocol; it is purely a format for session description. Best current practices for third-party call control 3pcc in the SIP.


SIP Extension Header field for registering non-adjacent contacts. A mechanism for content indirection in SIP messages. Instead of specifying this timezone and having to support a database of timezones for knowing when and where daylight adjustments will be ietg, the repeat times are assumed to be all defined within the same timezone, and SDP supports the indication of NTP absolute times when a daylight offset expressed in seconds or using a type time will need to be applied to the repeated start time or end time falling at or after each daylight adjustment.

If the stop time is 0 then the session is “unbounded. SDP does not deliver any media by itself but is used between endpoints for negotiation of media type, format, and all associated properties.

SIP Extension Header field for service route discovery during registration. SIP torture test messages. Within an SDP message there are three main sections, detailing the sessiontimingand media descriptions. The fields present in their values are considered in the protocol as opaque strings, they are used as identifiers, just like paths in an URL or filenames in a file system: A SIP event package for registrations.

Information on RFC » RFC Editor

The SIP Refer method. Intervals can be represented with Network Time Protocol times or in typed time: In both cases, each textual field in the protocol which are not interpreted symbolically by the protocol itself, will be interpreted as opaque strings, but rendered to the user or application with the values indicated in the last occurrence of the charset and sdplang in the current Media section, or rrc their last value in the Session section.

SDP uses attributes to extend the core protocol. A framework for conferencing with the SIP.

An invite-initiated dialog event package for the SIP. SIP Extension for event state publication. Private SIP extensions for media authorization. SIP extension for instant messaging. The first one is used in the Session or Media sections to specify another character encoding as registered in the IANA registry [5] than the default one highly recommended UTF-8 where it is used in standard protocol keys whose values are containing a text intended to be displayed to a user.


This session is originated by the user ‘jdoe’, at IPv4 address From Wikipedia, the idtf encyclopedia. Private Extensions to the SIP for asserted identity within trusted networks.

A watcher information event template package for the SIP.

This product complies with SIP standards as noted in the following table. SDP is used for describing multimedia communication sessions for the purposes of session announcement, session invitation, and parameter negotiation.

This product complies with standards for SIP applications jetf noted in the following table. All these offsets are relative to the start time, they are not cumulative. Its name is “SDP Seminar” and extended session information “A Seminar on the session description protocol” is included along with a link for additional information and an email address to contact the responsible party, Jane Doe.

Session Description Protocol

RTCP ports for the audio and video streams of andrespectively, are implied. This page was last edited on 7 Octoberat By using this site, you agree to the Terms of Use and Privacy Policy. A presence event package for the SIP. Private SIP proxy-to-proxy extensions for supporting the PacketCable distributed call signaling architecture.